ASTROSAT CZTI

Data Quality Report

Orbit 29644

Creation date: 2024-06-27T20:06:23.765444
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_286T01_9000004268_29644cztM0_level2.evt modeM0/AS1T03_286T01_9000004268_29644cztM0_level2_quad_clean.evt
Size (bytes)492,932,160112,608,000
Size470.1 MB 107.4 MB
Events in quadrant A3,048,693741,301
Events in quadrant B3,235,651778,826
Events in quadrant C3,338,021757,397
Events in quadrant D4,889,270704,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131202
B0135822
C0139592
D0187522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6146450.732184%
B6145871.415785%
C61451342.180635%
D61454186.802278%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7416 6147 0 0 0.00% 0.00%
B 7415 6145 10 10 0.13% 0.16%
C 7415 6145 7 7 0.09% 0.11%
D 7415 6145 306 306 4.13% 4.98%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 11355 67.56 789 774 156.6
A 3 137 7524 43.1 789 774 156.6
A 0 226 6543 36.84 789 774 156.6
B 15 33 64852 435.53 801 781 147.1
B 12 111 17559 114.05 801 781 147.1
B 11 111 15899 102.77 801 781 147.1
C 14 238 128259 701.14 788 796 181.8
C 10 22 80046 435.94 788 796 181.8
C 15 208 38473 207.25 788 796 181.8
D 7 80 1033646 5812.73 757 739 177.7
D 8 195 506723 2847.45 757 739 177.7
D 2 250 149163 835.26 757 739 177.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter